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PostPosted: Thu Oct 31, 2013 12:17 am 
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Joined: Thu Mar 20, 2008 3:03 am
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Location: nyc
I think because drag decreases substantially at slower speeds and so does resistance up front. Thats why it matters almost not at all climbing due to such slow speeds where weight matters more. It matters less though I do not mean to say not at all, just less as you slow down to below 20 from reading I've done.

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Posted: Thu Oct 31, 2013 12:17 am 


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PostPosted: Thu Oct 31, 2013 3:04 am 
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"It matters less though I do not mean to say not at all, just less as you slow down to below 20 from reading I've done."

gitsome wrote:
but if you average 20-25 over distance it seems the aerodynamics are meaningless



So what is it, meaningless or it matters less? Which one are you going to go with. Many of your posts today seem to be flip flopping on what you are trying to say. There is much data supporting that aero still matters even if it is 'only' 20-25 mph over a distance. Aero even matters when climbing (as you have to go down the other side).


gitsome wrote:
Thats why it matters almost not at all climbing due to such slow speeds where weight matters more.


You need to read Cervelo's "Col de la Tipping Point". For a pro that tipping point is 8% (where weight starts trumping aero, anything less and aero wins). For an average (250W) rider it is 5%.

http://www.cervelo.com/en/engineering/thinking-and-processes/weight-vs-aero.html

Why can't you have aero and light together?

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PostPosted: Thu Oct 31, 2013 5:06 am 
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Meaningless.. I should have said Less Meaningful going to almost not meaningful at all below 20. OK? Something like that.

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PostPosted: Thu Oct 31, 2013 5:08 am 
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And yes, I said climbing, I did not say descending, obviously descending matters again, my point was slower speeds in ascent. Please do not put words in my mouth as so many others seem to do on WW these days.

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